!                Parallel Sparse BLAS   GPU plugin 
!      (C) Copyright 2013
!  
!                         Salvatore Filippone
!                         Alessandro Fanfarillo
!   
!    Redistribution and use in source and binary forms, with or without
!    modification, are permitted provided that the following conditions
!    are met:
!      1. Redistributions of source code must retain the above copyright
!         notice, this list of conditions and the following disclaimer.
!      2. Redistributions in binary form must reproduce the above copyright
!         notice, this list of conditions, and the following disclaimer in the
!         documentation and/or other materials provided with the distribution.
!      3. The name of the PSBLAS group or the names of its contributors may
!         not be used to endorse or promote products derived from this
!         software without specific written permission.
!   
!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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!    POSSIBILITY OF SUCH DAMAGE.
!   
  

function psb_s_ell_csnmi(a) result(res)
  
  use psb_base_mod
  use psb_s_ell_mat_mod, psb_protect_name => psb_s_ell_csnmi
  implicit none 
  class(psb_s_ell_sparse_mat), intent(in) :: a
  real(psb_spk_)         :: res

  integer(psb_ipk_)  :: i,j,k,m,n, nr, ir, jc, nc
  real(psb_spk_)   :: acc
  logical            :: tra, is_unit
  Integer(Psb_ipk_)  :: err_act
  character(len=20)  :: name='s_csnmi'
  logical, parameter :: debug=.false.


  if (a%is_dev()) call a%sync()
  res = szero
  is_unit = a%is_unit()
  do i = 1, a%get_nrows()
    acc = sum(abs(a%val(i,:)))
    if (is_unit) acc = acc + sone
    res = max(res,acc)
  end do

end function psb_s_ell_csnmi